AS & A Level Computer Science (9618) - Chapter 8: System Software

Summary

In this educational video, James, a computer science graduate turned teacher, delves into the world of system software, essential for a computer's operation. He explains that system software acts as a platform for application software and manages hardware resources. James covers the evolution of operating systems, their role as a middleman between hardware and software, and their tasks like user interface provision, resource management, and security. He also explores utility software, program libraries, language translators, and integrated development environments, highlighting their significance in maintaining system functionality and aiding programmers.

Takeaways

• 💻 System software is essential for a computer to function, providing a platform for application software and managing hardware resources.
• 🖥️ The operating system (OS) acts as a middleman between hardware and application software, controlling hardware and facilitating interaction with applications.
• 🔧 Utility software, such as antivirus and disk cleanup tools, performs specific tasks to maintain and enhance the functionality of a computer system.
• 🗂️ Program libraries or subroutines are pre-written code snippets that can be reused by programmers to save time and effort, improving efficiency in software development.
• 🔗 Dynamic link libraries (DLLs) allow programs to access subroutines at runtime without the need to copy them, reducing storage space and memory usage.
• 🔧 Translators, including interpreters and compilers, convert high-level programming language code into machine-readable code, with interpreters executing line by line and compilers translating the entire code at once.
• 🛠️ Integrated Development Environments (IDEs) offer a comprehensive suite of tools for programmers, including code editing, debugging, and building capabilities, all within a single interface.
• 💡 IDE features like pretty printing, context-sensitive prompts, dynamic syntax checking, and code block expansion/collapsing enhance the coding experience and productivity.
• 🔄 Java introduces a unique approach by using both compilation and interpretation, with Java bytecode being interpreted by the Java Virtual Machine (JVM) for platform-independent execution.

Q & A

What is system software?

System software is the type of computer program that provides a platform for running application software and manages computer hardware resources.

What are the main tasks carried out by an operating system?

Operating systems control hardware, interact with application software, provide a user system interface, manage resources, handle memory management, manage device drivers, and manage files.

What is the difference between a graphical user interface and a command line interface?

A graphical user interface allows users to interact with the computer using graphics, such as icons on a desktop, while a command line interface is text-based and often used by programmers to communicate with the system.

How does an operating system manage resources?

The OS manages resources by allocating RAM and processing power to various processes, scheduling tasks to ensure each process gets sufficient time and resources, and resolving conflicts when multiple processes require resources simultaneously.

What is the purpose of utility software?

Utility software is designed to perform specific tasks to maintain the overall functionality and maintenance of a computer system, such as cleanup, antivirus scanning, and file compression.

What is a program library and how does it help programmers?

A program library, also known as a subroutine, is a collection of pre-written code snippets that can be reused by programmers to perform specific operations, reducing the time and effort needed to write code from scratch.

What is the role of a translator in system software?

Translators in system software convert human-readable code into machine-readable code. They can be either interpreters, which execute code line by line, or compilers, which translate the entire code into machine code at once.

What is the difference between an interpreter and a compiler?

An interpreter translates and executes high-level code line by line during execution, while a compiler translates the entire high-level code into machine code all at once before execution.

What is an Integrated Development Environment (IDE) and what features does it provide?

An Integrated Development Environment is a software that provides programmers with a single interface for code editing, debugging, and building capabilities. Features include pretty printing, context-sensitive prompts, dynamic syntax checking, and debugging tools.

How does Java's approach to program execution differ from traditional methods?

Java uses a distinct approach by compiling code into bytecode, which is then interpreted by the Java Virtual Machine during runtime, allowing for portability across different computers equipped with a Java Virtual Machine.

Outlines

00:00

💻 Introduction to System Software

James, a computer science graduate turned teacher, introduces the concept of system software in this video. He explains that system software is essential for a computer to function as it provides the platform for running application software and manages computer hardware resources. James discusses the evolution of system software, highlighting the transition from using punch cards and tapes to the modern operating systems (OS) that act as intermediaries between hardware and application software. He outlines the primary tasks of an OS, including providing a user interface, managing resources, and handling processes.

05:00

🛠️ Operating System Functions

This section delves deeper into the functionalities of an operating system. James explains that the OS is responsible for memory management, ensuring no two processes use the same memory location and optimizing memory usage. It also handles device management by installing device drivers, allowing hardware to communicate with the computer. File management is another key function, where the OS controls file naming conventions, directory structures, and access control mechanisms. Security management is also discussed, including data recovery, intrusion prevention, and data privacy. Lastly, the OS is tasked with error detection and recovery, ensuring system stability and data integrity.

10:02

🔧 Utility Software and Its Role

James moves on to discuss utility software, which is designed to perform specific tasks to maintain and enhance the functionality of a computer system. Examples include hard disk formatters, defragmenters, backup software, file compression tools, and virus trackers. Each utility software has a unique role, such as erasing data, optimizing hard disk performance, creating backup copies, compressing files, and ensuring system security. These tools are not run continuously but are initiated by the user or the OS when necessary, providing additional support to the overall system.

15:04

📚 Program Libraries and Their Utility

Program libraries, also known as subroutines, are collections of pre-tested code snippets that programmers can use to avoid rewriting common functions. These libraries save time and effort by allowing developers to integrate existing, functional code into their projects. The video explains the difference between static libraries, where the subroutine code is copied into the program, and dynamic link libraries (DLLs), which are loaded at runtime and shared among multiple programs. The advantages and disadvantages of both approaches are discussed, focusing on storage space, memory usage, and the potential for runtime linking delays.

20:06

🔗 Translators: Compilers and Interpreters

Translators are system software that converts human-readable code into machine-readable code. The video distinguishes between compilers and interpreters. Compilers translate the entire high-level code into machine code at once, while interpreters execute the code line by line during runtime. The discussion covers the advantages and disadvantages of each method for both programmers and users. Compilers are beneficial for creating executable files that can be distributed and run faster, but they require more development time. Interpreters allow for real-time error detection and are useful for debugging, but they may be less secure and slower due to the need to access the source code and interpreter each time the program runs.

25:09

🛠️ Integrated Development Environments (IDEs)

The final section of the video focuses on integrated development environments (IDEs), which are essential tools for programmers. IDEs provide a single interface for code editing, debugging, and building. James highlights features such as pretty printing for better code readability, context-sensitive prompts to save time, dynamic syntax checking, and code block expansion and collapsing for easier navigation. Debugging is also covered, explaining how IDEs include debuggers that allow developers to step through code and inspect variables, making it easier to identify and rectify errors. The video concludes with an invitation for viewers to ask questions and a teaser for the next video.

Keywords

💡System Software

System software refers to the type of computer program that provides a platform for running application software and manages computer hardware resources. It is the foundational layer of software that allows a computer to function, including operating systems, utility software, program libraries, language translators, and integrated development environments (IDEs). In the video, system software is described as the 'middleman' between hardware and application software, highlighting its crucial role in modern computing.

💡Operating System (OS)

An operating system (OS) is a type of system software that manages computer hardware, software resources, and provides essential services for computer programs. It acts as an intermediary between the user of a computer and the computer hardware. The video explains that before operating systems, users had to manually load programs and data using punch cards and tapes, which was inefficient. The OS simplifies this process, allowing for easier management of resources and execution of tasks.

💡User Interface

A user interface (UI) in the context of computing is the space where interactions between humans and computers take place. The video mentions two types of user interfaces: graphical user interface (GUI) and command-line interface (CLI). The GUI allows users to interact with the computer using graphics, such as icons on a desktop, while the CLI is often used by programmers and involves typing commands to communicate with the computer.

💡Resource Management

Resource management in operating systems refers to the allocation and management of computing resources such as memory, processing power, and storage. The video explains that the OS handles multiple processes that may be running simultaneously, ensuring each gets the necessary resources to function effectively. This includes scheduling processes to run in an orderly manner and resolving conflicts when two processes require the same resource.

💡Memory Management

Memory management is a critical function of the operating system that deals with the allocation and deallocation of memory during the execution of a program. The video discusses how the OS ensures no two processes use the same memory location and how it optimizes memory usage. It also touches on the concept of virtual memory, which allows a computer to use hard disk space as temporary RAM when the physical RAM is full.

💡Device Management

Device management is the process by which an operating system handles the installation and operation of hardware devices. The video mentions that the OS installs appropriate device drivers, which are software that allows hardware devices like keyboards and printers to communicate with the computer. This ensures that users do not have to manually find and install drivers for each device.

💡File Management

File management involves the way an operating system organizes, stores, and retrieves files on a computer. The video describes features such as file naming conventions, directory structures, and access control mechanisms. These features help users to manage their files effectively and ensure that only authorized users can access certain files or perform specific actions.

💡Security Management

Security management in operating systems is focused on protecting the system and data from unauthorized access, damage, and loss. The video explains that the OS handles data recovery, prevents intrusion through antivirus software, and ensures data privacy through encryption. This is crucial for maintaining the integrity and confidentiality of user data.

💡Error Detection and Recovery

Error detection and recovery is the process by which an operating system identifies and responds to errors or system failures. The video mentions that the OS should be capable of pausing an ongoing process and offering diagnostics when necessary. It must also be able to shut down the system systematically without data loss, ensuring the stability and reliability of the computer.

💡Utility Software

Utility software, as discussed in the video, is a type of system software designed to perform specific tasks that maintain and enhance the functionality of a computer system. Examples include disk formatters, antivirus scanners, and file compression tools. These utilities are not run continuously but are initiated by the user or the OS when necessary to perform tasks like cleaning up disk space or ensuring system security.

💡Integrated Development Environment (IDE)

An integrated development environment (IDE) is a software application that provides comprehensive facilities for software development. The video describes how IDEs offer features like code editing, debugging, and building capabilities within a single interface. IDEs like PyCharm and Visual Studio Code are essential tools for programmers, as they streamline the development process and provide tools like syntax highlighting, code completion, and debugging support.

Highlights

System software is the type of computer program that provides a platform for running application software and manages computer hardware resources.

Operating System (OS) is the core system software that controls the hardware and interacts with application software.

Before the OS, punch cards and punch tapes were used to start programs and data.

The OS acts as a middleman between hardware and application software.

The OS provides a user system interface, which can be graphical or command line.

The OS also provides a program-hardware interface, managing hardware for software use.

Resource management by the OS includes scheduling processes and allocating RAM and processing power.

Memory management by the OS ensures no two processes use the same memory location and optimizes memory usage.

Device management involves the OS handling the installation of device drivers.

File management features include file naming conventions, directory structures, and access control mechanisms.

Security management by the OS includes data recovery, preventing intrusion, and ensuring data privacy.

Error detection and recovery by the OS involve pausing processes and offering diagnostics in critical situations.

Utility software is designed to perform specific tasks for maintaining and enhancing computer system functionality.

Program libraries, also known as subroutines, are pre-written code snippets that can be integrated into other programs to reduce development time.

Translators convert human-readable code into machine-readable code, with interpreters executing line by line and compilers translating the entire code at once.

Integrated Development Environments (IDEs) provide features like code editing, debugging, and building capabilities within a single interface.

Pretty printing in IDEs uses color coding to represent different elements of code for better readability.

Context-sensitive prompts in IDEs save time by suggesting possible values as the code is typed.

Dynamic syntax checking in IDEs automatically corrects and notifies developers of errors in real-time.

Expanding and collapsing code blocks in IDEs help manage clutter and focus on specific parts of the code.

Debuggers in IDEs allow developers to track program execution step by step and inspect variables and expressions.

Transcripts

have you ever wondered what type of

software a computer must have to

function so this is the topic for our

video today which is called system

software my name is James I'm a computer

science graduate turn teacher and in

this video series I want to give you a

full a-level Computer Science Education

so let's look into what is system

software to Define it it is the type of

computer program that provides a

platform for running application

software which is all the other software

besides system software and manages

computer hardware resources so all this

different softwares here fall under the

umbrella of what we call system software

the OS utility software program Library

language translator and eventually the

IDE so let's look at what an operating

system is so before the operating system

was invented punch cut and punch tapes

are the tools that are used to Start

program and

data this is what will happen when you

want to use a computer with before the

operating system error you have to put

your program on a punch cut and data on

a punch tape as the programmer or the

user you have to insert these cards into

what we call the card reader and tape

reader respectively and you press a

physical run button and once the program

is run you'll get the output printed on

the line printer as you can see this

method is not really efficient because

what you have multiple programs to run

then you might have to do this all day

long and this is exactly what happened

in the era before operating

system what the operating system do is

that it controls the hardware and

interact with the application software

think of it like the middleman between

the hardware and application software

what the example that we discussed just

now the human was the metan

and now we are delegating the role to

the operating system so let's look into

some of the tasks carried out by the OS

the first one is it provides a user

system interface which is a interface

that enables user to make the software

and Hardware perform meaningful task

think of it like a interface for us to

communicate with our device and there

are two types of user interface in your

syllabus the first one is graphical user

interface in which you interact with the

computer using Graphics by pressing

icons on your desktop for example the

other way is called command line

interface not a lot of people have used

this but programmers will use this very

often to communicate with the

device the second task that operating

system do is that it also provide a

program Hardware interface think about

it all the software that you use for

example I use final card Pro to to

record my video this software requires

the usage of certain Hardware like

computing power and RAM to

run and what the OS does is that it

manages Hardware it allocate hardware

for software to be used so it ensures

that software can effectively utilize

Hardware capabilities to perform

specific task and function so as a

programmer if you are the creator of

final cart Pro you do not need to know

how Hardware functions you just need to

follow certain procedure because

operating system will allocate all the

things for

you the third thing that the OS do is

that it manage resources so resources in

this way refers to the computing power

and also the memory there are many

processes that can be running at the

same time so process is a program that

has begun

execution process one could be your

Google Chrome processor 2 could be your

Spotify app Etc and these processors

require RAM and processing power so the

OS will be the one that allocate RAM and

processing power to each process because

it will know how much RAM it needs how

much computing power it

needs this is one of thing that the OS

do so look at this diagram here the

there are many process running but let's

say the computer can only handle one

process at a time this is when the OS

coming into play

they

allocate time slot for each process to

run which means that each process will

get sufficient time sufficient resources

to run it and it will also resolve

conflict if two processes need to be

running at the same time and for example

here if process one and process two need

to be running at the same time the OS

will arrange it in a way that all right

process one and run first followed by

process two

so this is a major Topic in operating

system study but today we're not going

very deep into it this thing is called

scheduling the fourth thing that the

memory do is called memory management so

there are few aspect of memory

management first of all the OS ensures

that no two processors can attempt to

use the same memory location so in this

case if I have three processors all

these three processors will be in a

different location in the ram so that's

the first one and the second one is the

selection of the memory organization

scheme it is also done by the operating

system it aims to utilize optimize the

utilization of restricted memory

capacity such as employing virtual

memory through paging or segmentation

basically virtual memory is let's say

you are running many programs and you

don't have enough RAM so a virtual

memory is part of the hard disk

that is used to as a temporary RAM and

the OS will be responsible for

allocating all right this process you

will use virtual memory for now and then

the other second it will be used by

another processes so this is what the OS

does it do this automatically for us

because so that the user doesn't have to

worry about it the third one is

optimizing memory usage ands making

Choice regarding which processor should

res in the me primary memory at a given

moment which is something that I

mentioned the OS will know whether

process one and or process two needs the

physical memory now if process one is

more urgent they will allocate process

one to have that instead of process two

this is what the OS does in terms of

memory

management device management the

operating system handles the

installation of the appropriate device

driver so device driver is a software

that allows a certain hardware for

example keyboard to communicate with the

computer so the OS will help us to

install all this device driver so that

as a user you don't have to go and find

the device driver for webcam for printer

for keyboard these are all carried out

by the operating

system file management three main

features here the file naming con

convention so this is some of the

experiment I did on my MacBook so if you

will try to create two folders with the

same name you will receive this warning

again this action here is detected by

the operating system it also control the

OS also control the directory structure

which is how you organize your files by

creating folders so these are also

features enabled by the operating system

lastly is the access control mechanism

it's a process of regulating and

restricting access to data or resource

ensuring that only authorized entities

can access specific information or

perform certain action so user control

user management let's say three person

is using this computer here and the OS

will help you

to set exact control for different

people okay the last two Tas is the

Security

Management OS handle data recovery in

cases of data losses usually via backup

program and it prevent intrusion by

installing antivirus anti-hacking

software and it also ensures data

privacy possibly by encrypting your data

so that no one can read what is on your

computer last but not least every

detection and Recovery the operating

system should be capable of pausing an

ongoing process and offering error

diagnostic when necessary in critical

situation it must be able to

systematically shut down the system

without any data loss so this is the

kind of protection that we do not see

very often and yet they are done by the

operating system so these are the seven

feature user system interface program

Hardware interface resource management

and memory management device management

file management Security Management

error detection and recovery so these

are all the things that the OS does so

let's look into the second type of

system software called the utility

software like operating system utility

software is a software designed to

perform specific task so each utility

software has a specific role so their

purpose is to maintain the overall

functionality and maintenance of a

computer system something that they do

include this cleanup antivirus scanning

or file compression so it it's not

executed during regular operation of the

operating system but then it is a

program that is initiated by us the user

or the operating system when necessary

so I want to show you a few examples of

utility software the first one is the

hard disk formatter and Checker so the

formatter will erase all the data let's

say you are buying a secondhand laptop

this is what the hard disk formatter

will do just erase everything formatt it

second feature it establishes the file

system on that this using a directory

that link file recognized by the op OS

to specific physical location so let's

say you have two very important folders

folder a and folder B what this software

will do is that it will allocate

physical memory let's say here and here

on the disc for folder A and B

respectively lastly is to divide the

disc into logical drive if necessary so

the first type of utility software is

the hard dis formatter and Checker the

second software is also related to all

right before that hard this format and

cheacker will also help to repair your

disc so usually a disc is considered a

flaw when a particular sector cannot be

used to store data anymore and what this

software does is that it will

prevent this

sector it it will either repair it or it

will prevent this sector from being used

to store data otherwise your data could

get corrupted if it's stored in a wrong

sector the second type of utility

software related to hard dis is the

defragment Tator def fragmentor which is

something I believe I've mentioned in

the previous video so what it does is

that it organize the hard dis into

proper form so that your hard disk can

process data quicker so defragmentation

happen when you are continuously

creating modifying and removing files

which leads to different files the data

of it is separated is segregated into

different location

in this case here if you remember a hard

disk drive they have something called a

moving heads so when you want to move

read data it'll just read from let's say

I want to read the purple highlighted

data the head will move from here to

here to here in order to read all the

data related to the purple highlighted

file and by moving in this particular

fashion it slows down the computer and

it affects performance so a defragmenter

will organize it so that the hard disk

head doesn't have to move that much so

it reorganized the fragmented data on

the dis to improve its performance and

speed the third type of utility software

backup

software it creates duplicate copies of

files and data from a computer or

network which can be used to restore the

original data in case of data loss

corruption or accidental deletion so how

they achieve backup is that they set up

a timetable for conducting backup

creating exact copy of what you have and

they'll generate a fresh backup file

only when there's modification which

means they will likely do it every once

in a while because you're constantly

changing data right so the third four

type of utility software file

compression I believe y'all have tried

to diip file before for your information

once you diip your file the file size of

it will be reduced because this is what

file compression software do they

compress

in a way that doesn't affect data

performance so in this screenshot that I

have taken when you compress this file

what happened behind the hood is that

the file compression software compress

these three individual file into one

archive file so you can try it on your

computer if you want to fifth type of

utility software the virus tracker it

scans and detect malicious software and

potentially harmful code within the

files and programs to ensure security

which is it is a program that runs

continuously to check whether there is

any malicious software that is on your

computer running if if that's the case

they will stop the process and even warn

you if necessary so these are all

utility software you can see that this

software they enhances the functionality

of a computer to make sure that you have

a good experience using them so there

two type of system software go back the

first one is operating system syst

followed by utility software now we're

looking at program Library so program

library is also called sub routine it

can be a bit hard to grab if you haven't

started coding yet but let me explain so

think of some codes here let's say a

programmer has written some codes that

will be frequently used by other

programmers as well so this is when the

programmers will make this code a sub

routine so that if other programmers

want to write the exact same code they

they don't have to write it from scratch

they can you just write a line on their

code Editor to use this chunk of

software so this is exactly what subin

are they're designed for specific

operations written by some good

programmer and then if the other

programmers want to use it they can

integrate into their own code reducing

the time and effort needed by using

pre-tested code snippits from a sub

routine Library meaning this code has

have been tested to be functional so

they don't have to invent it from

scratch

again

so as you know source code will

eventually be converted into machine

code because this is the only language

that a computer

can understand and the executable code

cannot run independently must be linked

with any utilized sub routin code which

means that if the programmer uses some

sub routine before you run before they

run the code it has to be linked to

where the sub routine was written and as

a result the sub routine has to be

copied over before it run it means that

it will take up a lot more space it also

increases memory usage when more than

one process using the

routine therefore to solve this problem

a Dynamic link library is introduced so

there a bunch of words here but let me

explain it in a clear way so it is a

collection of executable function and

procedure that can be dynamically loaded

and accessed by a program at runtime

meaning you don't have to copy it over

the advantage of this library is that

the executable code only require a small

code inclusion so instead of copying the

entire source code into the program they

only need to write a small code

inclusion to indicate that hey I'm using

this sub routine and this leads to

reduce storage space and also reduce

memory usage so when a new version of

the routine is available it can be

loaded into memory automatically

upgrading any program using it one

disadvantage of dynamic link library is

that sometimes recir library is not

available or it's incompatible and

performance can be affected due to the

need for runtime linking as we are

linking our code with the sub routine so

this can cause delay during program

execution so this are some advantage and

disadvantages that you need to

understand and

memorize okay the fourth type of system

software which is

needed in particularly in particular in

programming which is translator I have a

few lines of programming code here is

written in Python for your information

all this code will eventually be

converted into to Z and one but which

software does that right this is exactly

what translator do it converts human

readable code into machine readable

code so there are two different types of

translators the first one is interpreter

how interpreter work is that it ex

translate and execute high level code

line by line during

execution I have three lines of python

code here I want to show you how it will

be run

so how it works first step the first

line of the source code is process and

then the line is analyzed in this case

if an error is detected it is reported

and the interpreted program will stop

execution which means if in case of an

error happening line two will not be run

if there's an error on in line one line

two will not be run because the

interpretor will stop it if there's no

Arrow the source code line is transform

form into an immediate code intermediate

code so the interpretor program employ

this intermediate code to perform the

necessary operation think of it like a

stepbystep operation which will just

execute a code until an error is

reported and if there's no error step

two all this step will be repeated for

line number two until an error is

repeated or until the program has

terminated this is the first type of

translator the second type of translator

is called the compiler so instead

of going through the code line by line

they translate the entire high level

code into machine code all at once so

let me explain how this work the first

line of the source code let's say this

is the code is r and it will be analyzed

like what happened in interpreter if an

error is detected this is recorded So as

compared to interpretor the program

doesn't stop it it just

records the arrrow and if no errors

identified the source code line is

transformed into an intimat code like

what happened in

interpretor so the only difference is

that it doesn't stop when an error

occurred it just keeps going until it

finish compiling the whole program so

when no errors are found in the entire

source code the entirety of the

intermediate code is translated into

object code which is something that can

be executed and if any error identifi a

list of this error is generated as

output and No Object code is produced so

unlike inator execution of program can

only begin when the compilation has

shown no errors so in the previous

example when we talk about interpretor

if this line is okay they will just run

the code directly but in this case not

until

the code has shown that it has no Arrow

that it cannot run so I have listed some

advantages and disadvantages for the

programmer first and then for the user

for the programmer identifier error can

be recognized in real time and promptly

rectified because it will stop when an

error is detected so unlike compiler but

the disadvantage is that in a specific

program execution section of the code

with syntax errow might remain

inaccessible resulting in any lingering

AG being detected only at a later stage

and source code has to be distributed to

the user which mean if the programmer

has written this code and they want to

Sol it to other people they have to

distribute the entire source code to

other

people so as for the compiler the

benefit of it is that because it will

generate an executable

file this means that instead of giving

the purchaser the user the source code

in case you want to keep it as private

the executable file can be distributed

to user without having them access to

the source code so in interpretor you

must give them the source code but in

compiler you don't need but as a

compiler requires more time for the

initial development meaning it takes

more time to write code that requires a

compiler so that's the advantages and

disadvantages for the programmer and for

the user on the other

hand the disadvantage of an interpreter

is that every time an error free program

is executed the interpretor and the

source code need to be accessible

meaning to run the code as a user you

need the source code you need the

interpretor so that's a disadvantage for

compiler the advantage for the user is

that the execution speed achiever we

compile object code exit what can be

obtained by an integrator code you can

run it faster you can run the executable

code faster than as compared to using

interpretor because it's no longer

interpr line by line it's just just run

it and as for the compiled program only

the object code has to be available each

time an arror free program is run

meaning you don't need a compiler as a

user to run the code the disadvantage is

that it is less secure because it could

contain a virus someone could put a

virus into the executable code so that's

some differences between interpreter and

compiler so irrespective of whether an

interpretor or compiler is deployed a

program can only be executed on specific

computer with a specific processor if

The Interpreter of compiler program has

been tailored for that particular

processor so that's the

requirement if the option exists meaning

if you can choose the preference for an

interpretor during program development

is warranted due to following reason a

single error in the code can trigger the

occurrence of multiple additional error

and because of that you want to identify

and rectify error as soon as possible

which is something that interpreter can

do because it interpret codes line by

line and the debugging to integrator

with The Interpreter expedite this

process of course if the compiler the

usage of compiler will be justified if

the program is a sh of minimum errors in

the program which mean you don't think

there's any error all right so a

compiler allow for the creation of an

executable file that can be distributed

for gener use result in Faster execution

so they might be a bit slow to develop

but then as the user you can execute it

a lot

faster so this is some facts about Java

when Java is developed it introdu a

distinct approach to its utilization

requiring a Java virtual machine

specific to each type of computer upon

writing a Java program is initially

compiled into Java by code which is then

interpreted by Java virtual machine

during runtime so in this case here Java

is using both compiling and compilers

and interpretor the portability of java

B code enables it transfer to any

computer equipped with a Java virtual

machine so the last part that's all for

translator it translate programming

language code into binary code so the

last

thing last example of a system software

is the integrated development

environment so it is a software that

programmers need to develop software

yeah so it provides the following

features code editing debugging and

building capabilities all within a

single interface some example include

pycharm and visual studio code so in

this section I just want to show you

some of the feature of an IDE so that

when you start programming you don't

take them for granted you know that it's

done by the ID first feature the pretty

printing so I have an example of a uh

python code here as you can see the

colors

here they are used deliberately to

represent different think so for example

the commment is in green the keyword is

in blue and the variable name is in

Black for PRD printing they also allow

automatic indentation to allow you to

see your program in a better view

colorcoded data type also part of it

predy printing second thing context

sensitive

prompt for example I created two

variable number one and number two if I

want to pren out number one instead of

typing the entire

thing I just need to type the first

character and then it will show me what

are the possible values that I want to

type in and this save time when you are

coding Dynamic syntax check so for

example if I were to make a typo error

in my code it will automatically correct

me

and let me know what is going on so that

I don't have to proofread it myself in

this example it's the same Dynamic

syntax track expanding and collapsing

code block so initially this is the

entire code for the play function and if

you want to remove clutter to and to

focus on other aspect of the code you

can simply collapse or expand it anytime

you want to lastly it's about debugging

a debugger in an IDE can help identify

and rectify error or box in a code by

allowing developers to track the

execution of program step by

step and inspect variables and

expression and different points so a

debugger is usually included in an IDE

and that helps you to debug debug means

to find errors in your code easily by

going through the code line by line so

this is all about IDE and this is also

all about system software I hope you

learn a lot from this let me know in the

comment section if you have any question

and I'll be hope I'll hope to answer

that and I'll see you in the next video

thank you for

watching